1-2 - reactor SBR 1, 2; 3 - reactor SBR 3; 4 - accumulator - regulator for purified waste water (tank for clean water) /=3 m3; 5 - aerobic stabilizer (tank for surplus sediment) V= 5 m3 ; 6 - treated waste waters disinfecting (by request); 7 - air-compressors ; 8 - buffer tank for waste waters in case of electrical blackout  V=10 m3 ; 9 - outflow of  biological purified and disinfected waste waters ; 10 -stainless steel grid for large wastes ; 11 - ventilation; 12 - pump for supply sewage water in SBR 1,2 ; 13 - panel with collectors; 14- inflow of waste waters ; 15 - sediment waters ; 16 - aerators; 17- pumping sediments from clean water tank; 18 - foundation for air-compressors; 19 - stainless steel grid for small wastes; 20 - installations' mouths; 21 -  panel for treatment process controlled by a Mitsubishi controller (Japan); 22 - filter for additional cleaning ; (in case of need and by request);